Thursday 6 May, Windhoek -- On Wednesday 5 May, the opening day of the World Economic Forum on Africa (WEF) in Dar Es Salaam, a group of nine AIDS activists from across the continent were detained for questioning by Tanzanian authorities after they handed over a memorandum entitled '€œHealth is Wealth'€, which emphasised the need for increased investment in health and particularly HIV, TB and Malaria in Africa, to two prominent speakers at the WEF.